.company-img {
    width: 300%;
    height: 300px;
    animation: move 5s linear 0s infinite normal;
}

@keyframes move {
    from {
        margin-left: 0;
    }
    to {
        margin-left: -800px;
    }
}

.company {
    width: 1200px;
    height: 1100px;
    /*左右居中，上下离边框50像素*/
    margin: 50px auto;
    border: 1px solid slategray;
    /*注意：如果超出显示区域，就需要隐藏*/
    overflow: hidden;
}

.company-img2 ul li {
    float: left;
    list-style: none;
}

.company-img2 {
    position: relative;
}

.company-img2 ul {
    position: absolute;
}

/*后代元素选择器*/
.company p {
    /*相对于当前字体向后缩进3个字符*/
    text-indent: 3em;
    margin-bottom: 30px;
}

/*>符号，表示仅仅指当前第一排*/
.company > div:nth-child(2) {
    padding: 15px;

}